Results 51 to 60 of about 615 (177)
Cup product on A(infinity)-cohomology and deformations
, 2021 We propose a simple method for constructing formal deformations of differential graded algebras in the category of minimal $A_\infty$-algebras. The basis for our approach is provided by the Gerstenhaber algebra structure on the $A_\infty$-cohomology ...
Sharapov, Alexey A. +5 more
core +1 more source
Searching for Universality of Turbulence in the Earth's Magnetosphere
Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.Abstract Turbulence in space plasmas remains a fundamental challenge, and Earth's magnetosphere (MSP) offers a natural laboratory for its study. Using high‐resolution magnetic field data from the Magnetospheric Multiscale (MMS) mission, we extend a stochastic Markovian framework to analyze turbulence across 10 diverse magnetospheric regions, including ...
Dariusz Wójcik, Wiesław M. Macek
wiley +1 more source
Lie algebras: infinite generalizations and deformations [PDF]
, 1990 There are many applications of Lie algebras to theoretical physics. This thesis is a study of some new mathematical structures which also are applicable to current physical ideas.
Fletcher, Paul, Fletcher, P
core
La Meccanica Quantistica nello spazio delle fasi: caratteristiche non classiche [PDF]
, 2022 Si presenta una formulazione della Meccanica Quantistica in termini di funzioni nello spazio delle fasi del corrispondente sistema classico dotato del prodotto di Moyal non commutativo ( ) e della regola di quantizzazione di Weyl. Di una tale descrizione
Singh, Harman Preet
core
Family resemblance and the problem of universals: Bambrough's analysis revisited
Philosophical Investigations, Volume 48, Issue 4, Page 401-420, October 2025.Abstract In ‘Universals and Family Resemblances’, Renford Bambrough claims that Ludwig Wittgenstein's conception of family resemblance solves the problem of universals. Bambrough's analysis has attracted a number of criticisms, including (i) that his exposition of the problem of universals is ill‐conceived, (ii) that he overgeneralizes Wittgenstein's ...
David Hommen
wiley +1 more source
On the energy-momentum tensor in Moyal space [PDF]
, 2015 26 pagesInternational audienceAfter reviewing the known results for the definition and properties of the energy-momentum tensor(s) in Minkowski space, we study the properties of the energy-momentum tensor of gauge fields coupled to matter in non ...
François Gieres +7 more
core +1 more source
Noncommutativity and Duality through the Symplectic Embedding Formalism
Symmetry, Integrability and Geometry: Methods and Applications, 2010 This work is devoted to review the gauge embedding of either commutative and noncommutative (NC) theories using the symplectic formalism framework.
Everton M.C. Abreu +2 more
doaj +1 more source
A Jump‐Diffusion Model of the Auroral Electrojet AL Index: Complexity and Criticality
Space Weather, Volume 23, Issue 9, September 2025.Abstract This study presents a jump‐diffusion model to describe the dynamics of the auroral electrojet AL index, a geomagnetic measure frequently used to monitor polar ionospheric currents during substorms. The AL index captures the westward electrojet current's intensity, which responds to both solar wind‐driven disturbances and the magnetosphere's ...
G. Consolini, S. Benella, P. De Michelis
wiley +1 more source
Philosophy and Phenomenological Research, Volume 110, Issue 3, Page 939-958, May 2025.Abstract Trust is central to epistemology, particularly in accounts of testimony, where it describes the relationship between a hearer and a speaker (or trustor and trustee), enabling the acquisition of information. The speaker's trustworthiness—marked by sincerity and knowledge—is essential for testimony to transmit knowledge or justified belief ...
Annalisa Coliva
wiley +1 more source
Moyal representation of the string field star product in the presence of aBbackground [PDF]
Physical Review D, 2003 minor notation ...
Wu, Yong-shi, Zhuang, Ting-liang
openaire +2 more sources